How are you being treated for your TMJ? Bite splint? Medications? Etc.? Night driving is more difficult for me and I don't know if it's related to my TMJ or not. You already may be aware that the face has a major nerve called Trigeminal that has 3 major branches - one along lower jaw, another right across the middle (cheek bones) and the other around the eyes. This nerve has a major spot or ganglion where all the branches meet and it is right at the TMjoint. You could have injured this nerve resulting in Trigeminal Neuropathy.
The really bad face pain I have began about 5 years ago has been helped with a medication called Lyrica. It is a God-send to me. I recently tried to wean off the medication just to see what would happen (and try and cut costs) and the face pain came back full-strength.
This is something you could look into. There is no way to check for it other than the doctor needs to listen and then you can try the med starting at a very low dose and build up to the "working" dose of 75 mg. 3 times each day. Once we tried to increase the dose and it did adversely affect my cognitive function, so I'm back down to the working dose. My eyes are clearer now that the pain in my face and TMJ is controlled. Now I just don't like to drive at night but will.
Talk to your doc and see what comes of it. Please take care.
God bless...
Carol